| 摘要 |
The locking sleeve (20) of the guide tube exhibits a cylindro- frustoconical external surface without a radially projecting part. The cylindrical upper part (25) of the sleeve (20) constitutes a ferrule for fixing within the nozzle and the frustoconical lower part a bush (24) for expansion of the guide tube. The fixing ferrule (25), the thickness of which is substantially less than the thickness of the expansion bush (24), may be deformed within cavities provided in the nozzle of the assembly. An annular clamping groove (29) is machined in the upper part of the internal surface of the expansion bush (24). …<IMAGE>… |
